Just don't try to have both a zero sized array and a flexible array in the same struct. g++ 5 or earlier will compile that, but g++ 6 will not: https://gcc.gnu.

Just don't try to have both a zero sized array and a flexible array in the same struct. g++ 5 or earlier will compile that, but g++ 6 will not: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69550 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69550